| 摘要 |
<p>The arms comprise a C-shape cross-section with opposed cavities against the walls of the conveyor. The ends of the rollers are extended, each arm carrying at its ends the pulleys of horizontal shafts, at least one of which is rotated. - The rotated shaft carries an endless belt with its upper surface parallel with the top of the arms, which incorporate means for centering the rollers.</p> |
